package com.zax.servlet;

import com.zax.model.Goods;
import com.zax.service.GoodsService;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;

@WebServlet("/admin/goods_edit")
public class AdminGoodsEditServlet extends HttpServlet {


    private GoodsService gService = new GoodsService();

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        DiskFileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);
        try {
            List<FileItem> list = upload.parseRequest(request);
            Goods g = new Goods();
            int pageNo = 1;
            int type = 0;
            for (FileItem item :list){
                if (item.isFormField()){
                    switch (item.getFieldName()){
                        case "id":
                            g.setId(Integer.parseInt(item.getString("utf-8")));
                            break;
                        case "name":
                            g.setName(item.getString("utf-8"));
                            break;
                        case "price":
                            g.setPrice(Float.parseFloat(item.getString("utf-8")));
                            break;
                        case "intro":
                            g.setIntro(item.getString("utf-8"));
                            break;
                        case "cover":
                            g.setCover(item.getString("utf-8"));
                            break;
                        case "image1":
                            g.setImage1(item.getString("utf-8"));
                            break;
                        case "image2":
                            g.setImage2(item.getString("utf-8"));
                            break;
                        case "stock":
                            g.setStock(Integer.parseInt(item.getString("utf-8")));
                            break;
                        case "typeid":
                            g.setTypeid(Integer.parseInt(item.getString("utf-8")));
                            break;
                        case "pageNo":
                            pageNo=Integer.parseInt(item.getString("utf-8"));
                            break;
                        case "type":
                            type=Integer.parseInt(item.getString("utf-8"));
                            break;
                    }
                }else {
                    if (item.getInputStream().available()<=0){
                        continue;
                    }
                    String fileName = item.getName();
                    fileName = fileName.substring(fileName.indexOf("."));
                    fileName = "/"+new Date().getTime()+fileName;
                    String path = this.getServletContext().getRealPath("/picture")+fileName;
                    InputStream in = item.getInputStream();
                    FileOutputStream out = new FileOutputStream(path);
                    byte[] buffer = new byte[1024];
                    int len = 0;
                    while((len=in.read(buffer))>0){
                        out.write(buffer,0,len);
                    }
                    in.close();
                    out.close();
                    item.delete();
                    switch (item.getFieldName()){
                        case "cover":
                            g.setCover("/picture"+fileName);
                            break;
                        case "image1":
                            g.setImage1("/picture"+fileName);
                            break;
                        case  "image2":
                            g.setImage2("/picture"+fileName);
                            break;
                    }
                }
            }
            gService.update(g);
            request.getRequestDispatcher("/admin/goods_list?pageNo="+pageNo+"&type="+type).forward(request,response);
        } catch (FileUploadException e) {
            e.printStackTrace();
        }
    }
}
